Grow barley and rice to obtain a stable food source.

Successfully domesticated goats and obtained fixed food.

After several failures, it was made into pottery to hold all kinds of food.

Baking bread with harvested grain improved my diet.

Domesticate barbarians and make them loyal servants.

It took two years to cut down a tree and build a canoe to sail along the island.

Carve a mark on the square column with a knife every day to calculate the year, month and day.

Two vests are made of sailor's pajamas for sun protection.

Hat, coat and trousers made of goatskin are used to keep out the cold.

Chewing tobacco leaves cured myself when I was sick.